对给定分割,给出了可以块解耦的系统状态空间结构和导致这种结构的座标变换。
The state space structure of a system which can be block decoupled is obtained with the help of the coordinate transformation.
瞄准具的核心部件是由一块无透镜傅里叶变换位相全息图和一块全息光束变换器组成的全息光学元件。
The critical part of this sight is a holographic optical elements combined with a lensless Fourier transform hologram and a holographic beam transformer.
将中子伴随通量方程变换处理以后,利用格林函数节块法的原理求解中子伴随通量,以此代替过去采用最多的细网有限差分法。
A coarse mesh method, in which the theory of nodal Green's function method is adopted, is applied to get the adjoint neutron flux, after a transformation of adjoint flux equations has been made.
在运动非常激烈时,则首先采用小波变换,然后再用本方法进行块匹配搜索,可减少大量复杂的运算量。
If the movement is drastic, adopt the wavelet transformation first, then use this method to search block match, which can reduce a great deal of complicated calculating.
该文根据离散余弦变换(DCT)和量化运算的特点,提出了一种新的用于低比特率视频编码的全零块预先判别方法。
A new method for predetermination of all-zero blocks in low rate video coding is proposed, which is based on characters of discrete cosine transform (DCT) and quantization.
再用块编码、参考编码和高维变换(小波)编码等三类I BR压缩系统对照片集图像数据进行压缩。
The image data of the photo set was compressed with IBR compression algorithms such as the block coder, the reference coder and multidimensional wavelet transform.
然后利用势流变换建立功能方法树的基本构造块,采用人工智能技术生成功能方法树,产生多方案及评价;
Then, functional means tree was produced by effort-flow transforming operation, and multi-solution production and evaluation were utilized by artificial intelligent technique.
该硬件原型包含了从残差形成到宏块重建的变换量化全过程,其可以构成DSP的协处理器,用于完成H。 264实时编解码。
The hardware prototype is composed of the whole processes from obtaining residual error to Macro-Block reconstruction, and it can be used as a co-processor of DSP to fulfill H. 264 real-timing CODEC.
提出了一种基于小波变换域的块匹配运动估计搜索的新算法,模拟实验表明,利用此算法可获得比一般运动块匹配方法更大的峰值信噪比,具有更好的性能复杂度比。
The authors present a new algorithm for block-matching motion estimation based on wavelet transform. The simulation shows that this algorithm has better PSNR and performance-to-complexity ratio.
该算法增加了滤波变换块长度的自适应特性并更接近于人耳的滤波特性。
The proposed coding algorithm improves the adaptability of the filtering transform block length, the filtering properties produced by which are more analogous to that of humans' ears.
在尽量减少时钟消耗的前提下,此解码器可以解码每个变换块中变换系数的熵编码码流,并将结果按照块扫描顺序并行输出。
While minimizing the use of clock cycles, it could decode the coded stream of transform coefficients in each block and output the decoded coefficients in zigzag scanning order.
量化后的仿射变换t构成了图像块的分形块编码。
Quantized affine transformation t constitutes the fractal block coding of the image block.
其检索的邻域是几个关键块上的变换的并集。
The neighborhood these algorithms search on, is a union of transforms of different critical blocks.
低比特率时,基于块离散余弦变换(BDCT)的图像压缩方法常常会引起块效应。
At low bit rates, the block Discrete Cosine Transform (BDCT) compression methods often give rise to blocking artifacts.
提出一种构造择优量化表的新方法。在一个固定块尺寸的离散余弦变换(DCT)中,该方法可产生优化的率失真特性。
The present paper presents a new method for constructing optimal quantisation tables. The method produces optimal rate-distortion performance in a fixed block size DCT.
根据整数DCT变换和量化的特性,通过提前判定全零系数块来终止没有意义的运动搜索过程。
According to the characteristics of integer discrete cosine transformation(DCT) and quantization, the coefficient-all-zero block was determined in advance to terminate meaningless search.
块离散余弦变换在低比特率时其恢复图像的块边界上会出现明显可见的方块效应,从而降低了图像的视觉质量。
The block-Based Discrete Cosine Transform (BDCT) suffers from visible blocking artifacts between adjacent image blocks at low bit rates, which reduces the image visual quality.
通过状态变换和去耦合处理将系统转换为块能控标准型,它由值域空间子系统和稳定的零空间子系统组成。
The system was converted to the block controllable form consisting of two parts, one was the range space subsystem and the other was the stable null space subsystem.
介绍了利用劈形楔块作波型变换,达到用纵波探头测量材料横波衰减系数的方法。
A method is presented for measuring the shear-wave attenuation of solids by using propagation of ultrasonic wave in a wedge block.
对去除块效应的交叠正交变换进行深入研究,给出交叠正交变换的理论分析,并进行实验仿真。
The detail analysis of lapped orthogonal transform, which can reduce block effect, is presented. Theory analysis of lapped orthogonal transform is given, and the experiment is done.
根据运动估计的残差图像的DCT变换后交流系数的统计分布规律,推导出了一种块匹配运动估计的匹配准则。
In this paper, we propose a matching criterion for block-matching motion estimation based on the statistic distribution of DCT AC coefficients.
针对此问题,本文改进搜索方式为逐个关键块搜索,找到合适变换则放弃搜索剩余关键块。
As for the problem, the search method was improved to a manner that search block-by-block and quit once a proper transform was found leaving the rest of the blocks unsearched.
IDCT变换的蝶形算法采用非阻塞赋值的方式实现,并实现块级的流水处理;
Non-blocking assignment method was used to implement the butterfly algorithm of IDCT transform, which is pipelined with blocks.
通过图像块与相似块在DCT变换域少数低频系数的比较,来确定匹配的相似块。
This method compares the few low frequency DCT transform coefficients of the range blocks and domain blocks to find out the matched domain block.
该算法只需要通过直接抽取MPEG视频流中的B帧、P帧中的宏块类型信息,并对其进行计算就可以检测出视频中存在的镜头边界,从而对场景变换进行精确定位。
The proposed method can detect scene boundaries through using various macroblock type of B-frame and P-frame in MPEG video flow in order to realize accurate scene change positioning.
介绍了一种用普通开关电源专用集成电路控制块作为控制电路,以升压式变换器作为功率电路的功率因数校正电路。
Describes a power factor correction (PFC) circuit, in which the power circuit is a boost converter controlled general switch mode controller IC.
本文首次在水印算法中采用了LOT以代替传统的离散余弦变换(DCT),从而有效地避免了DCT的块效应。
LOT is first adopted in the watermarking algorithm instead of DCT, which greatly reduces the blocking effects.
即使在同一块田野上,他会看到时时变换的图画——这图画过去不曾见过,今后也再不会看到。
Even in the same field, one can behold the changing beauty with every hour — a picture which is never seen before and shall never be seen again.
提出了一种基于小波变换的块大小可变的多分辨率运动估计方法(VBMRME),以减少图象间的时间冗余。
A scheme of variable block size Multiresolution Motion Estimation (VBMRME) is presented in this paper, which reduces temporal redundancy between pictures of the image sequence.
提出了一种基于小波变换的块大小可变的多分辨率运动估计方法(VBMRME),以减少图象间的时间冗余。
A scheme of variable block size Multiresolution Motion Estimation (VBMRME) is presented in this paper, which reduces temporal redundancy between pictures of the image sequence.
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